Monistus

input/code.cpp: In function 'int main()':
input/code.cpp:10:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |     while (i != str.length()) {
      |            ~~^~~~~~~~~~~~~~~

#include <iostream>
#include <string>

using namespace std;

int main() {
    string str;
    cin >> str;
    int i = 0;
    while (i != str.length()) {
        if (isdigit(str[i])) {
            str.replace(i, 1, str.substr(i + 1, str[i] - '0'));
            i -= 1;
        }
        i += 1;
    }
    cout << str << endl;
    return 0;
}

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: ACCEPTED

Test 4

Group: 1, 2

Verdict: ACCEPTED

Test 5

Group: 1, 2

Verdict: ACCEPTED

Test 6

Group: 1, 2

Verdict: ACCEPTED

Test 7

Group: 1, 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 2

Verdict: ACCEPTED

Test 12

Group: 2

Verdict: ACCEPTED

Test 13

Group: 2

Verdict: ACCEPTED

Test 14

Group: 2

Verdict: TIME LIMIT EXCEEDED